Filtering apparatus.



W. E. HOLUERMAN.

FILTERING APPARATUS.

Arme/111011 FILED JUNE 26, 1913.

1,146,256. Patented July 13, 1915.

2 SHEETS-SHEET l.

eoLuMBM PLANOGRAPH Co.,wASM1NaTON,D.c.

Wl E. HOLDERMAN.

FILTERING APPARATUS. APPLICATION FILED :uN'E 2s. 1913.

1,146,256. Patented July 13, 1915.

22' QZ Q1 Z] -IH W 3mm/hols COLUMBIA PLANDGRAPH Co.. WASHINGTON, D. C

TED STATES PATENT `irri-o..

WILLIAM E. HOLDERMAN, 0F4 SALT LAKE CITY,- '011545.1-1.

FLT'ERING APPARATUS'.

T0 all whom it may concern Beit known that I, VILLIAM E. HOLDER- MAN, a*citizen of the Unitedl States, residing at Salt Lake City, in the countyof Salt Lake' and State of Utah, have invented new and usefulImprovements in Filtering Apparatus, of which the following iis aspecification.

This invention has reference toimprovementsin a device adapted for thetreatment of ore, and more particularly to the extraction of metal fromore by the cyanid process.

@ne of the objectsof this invention is the provision of a filteringmedium which will operate to a maximum degree` of efliciency in theseparation of the filtrate from'y the residue, and at the sametime'to'provide for the introduction of wash water for flushingpurposes.

A further object of this invention isth'e provislon of an improved valvestructure whereby the apparatus may be thoroughly drained from all itspoints thereof of the residue accumulated therein during the carrying onof the process. It is the aim of the present invention to provide meansfor carrying out the draining of the apparatus by the operation of asingle lever thus reducing the number of attendants required, andaccomplishing a consequent reduction in expense.

A still further object is to provide suitable valve structure permittingthe ,introduction of wash water in one part of the apparatus, while thefiltering operation is being carried on in the other, thus obtaining amore efficient separation of the filtrate from the residue.

For a full understanding of the invention, reference is made to theaccompanying drawings, which illustrate a structural embodiment thereof,in a preferred form.

Figure 1 is a side elevation of the improved apparatus with a portionbroken away to show the filtering medium therein; Fig. 2 is an endelevation, partly in section, showing the filtering medium more indetail, and also the improved valve mechanism; and Fig. 3 is a plan ofthe apparatus, showing in detail the valve mechanism.

Referring more particularly to the drawings, a tank is indicated at 1,which may be of any suitable construction, but preferably pentagonal inshape, having the top wall 2 and the side walls 3 and 4 at right anglesto the said top wall, and the two bottom Specification of LettersPatent. Patented-,July 13, 1915.

Application filed J' une 26, 191153.

walls 5= and 6 sloping toward each other to form a trough-likey cavityin the lower portion of the tank. v

Disposed within the tank 1 and. spaced at intervals therein are aplurality of filtering partitions?, formed of a framework of jointedpiping covered with a suitable filtering fabric; This frame-workconsists of a horizontal pipe S running parallel to the top 2 of thetank and extending from end to end' thereaeross. Secured to each end ofthe horizontal pipe 8. by any suitable coupling means, and disposed atright angles thereto arethe vertical pipes9 and 10, which are in turn,coupled at their lower ends thereof to the inwardly extending pipes 11and 12,'the oppositeenrdis of which are secured to a pair of verticalpipes 13 and 14, extending upwardly on each side of the vertical centerline of the frame-work and jointed respectively at 15 and 16 to thehorizontal pipe 8. It will be noted that there is thus obtained acontinuous circulation of fluid throughout the entire framework,permitting iiuid pressure or suction to be applied at all pointsthereof, as may be desired. A series of perforations 17, spaced atintervals throughout the framework permit the introduction of fluid intothe interior of the partition in a fine spray-like condition, as well asan equal distribution of the filtering or suction process carried ontherein. To constitute the filtering means, the opposite halves of theframework eX- tending from the pipes 10 to 141 and the pipes 9 to 13,respectively, are enveloped in any suitable porous material 18, whichwill offer the proper resistance to the passing of solids. This materialmay be secured to the framework in any convenient manner, in the presentinstance, by stitching.

Extending beneath the tank on opposite sides thereof, is a pair of pipes19 and 20, having a series of upstanding couplings 21, projecting intothe tank and connecting at 22 with each half of the framework of eachalternate lter leaf. Suitable connections lead to a pair of pumps, notshown, which operate to introduce wash water into one series, whiledrawing out the filtrate from the alternate series. Similar connections23, and 24, with the pumpsA are provided for the other series of leaves.It will be noted that by the provision of separable connections of eachhalf of the leaf with the pumps, a dual action may be carried on in eachleaf.

Located Within the tank, and on its bottom Wall thereof, are a series ofvalve openings 25, Which form seats for the valve pistons 26, carried bythe end of the stems 27 centrally located Within the tank, and eX-tending nearly to the top thereof. Pivoted to the upper end of the stemsare the links 28, formed with collars 29, keyed on the common shaft 30,Which is journaled for rocking movement in suitable bearings located ateach end of the tank. A lever 31 serves to rock the shaft 30 and thusoperates to open and close the series of valves 26 located in the bottomof the tank. It Will thus be seen that, by the operation of a singlelever, the tank may be drained, from all its points thereof, of theresidue accumulated during the Working of the process, and Without anyinterruption.

A suitable trough 31, extending beneath the tank, is provided for thereception of the residue.

Although the particulars of the present invention have been fully setforth, yet it is to be understood that it is capable of Wideapplication, and that the invention is not limited to the structureherein described,

but, on the contrary, may include any modiiication, Without departingfrom the scope thereof.

What is claimed is:

l. In a tank, a filtering partition Within said tank comprising anangular framework of perforated piping divided longitudinally into tWosections, the top pipe of the framework being common to both sections,cover of filtering fabric stretched across each frame, and means forcausing a flow of fluid into and from said partition.

2. In a tank, a series of filtering partil Copies of this patent may beobtained for ve cents each, by addressing the Commissioner of Patents,

Washington, I). C. v

